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题名: The characterization of graphite felt electrode with surface modification for H-2/Br-2 fuel cell
作者: Zhang, Linsong1, 2;  Shao, Zhi-Gang1;  Wang, Xunying1, 2;  Yu, Hongmei1;  Liu, Sa1, 2;  Yi, Baolian1
关键词: Hydrogen bromine fuel cell ;  Graphite felt electrode ;  Surface modification ;  Electrochemistry
刊名: JOURNAL OF POWER SOURCES
发表日期: 2013-11-15
DOI: 10.1016/j.jpowsour.2013.05.049
卷: 242, 页:15-22
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: Graphite felt is used as the bromine electrode in H-2/Br-2 fuel cell, which is surface modified by acidic oxidation and thermal oxidation for improving cell performance. The structure, composition, electrochemical properties and performances of the modified electrodes are characterized with X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, electrochemistry impedance spectroscopy and single cell polarization curves. The maximum power densities are improved from the original 0.51 to 0.62 and 0.69 W cm(-2) after acidic oxidized at 80 degrees C for 8 h and thermal oxidized at 500 degrees C for 5 h, respectively. The performance improvement may be attributed to the increase in oxygen-containing functional groups and surface area which could increase the electrochemical catalytic activity and thus decrease the charge transfer resistance. However, the ohmic resistance and charge transfer resistance increase after superabundant oxidation, which causes badly deteriorates in cell performance. (C) 2013 Elsevier B.V. All rights reserved.
关键词[WOS]: REDOX FLOW BATTERY ;  WALLED CARBON NANOTUBES ;  HYDROGEN ELECTRODE ;  ENERGY-STORAGE ;  PERFORMANCE ;  H2SO4
语种: 英语
WOS记录号: WOS:000323628100003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137647
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Zhang, Linsong,Shao, Zhi-Gang,Wang, Xunying,et al. The characterization of graphite felt electrode with surface modification for H-2/Br-2 fuel cell[J]. JOURNAL OF POWER SOURCES,2013,242:15-22.
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